Graeme, Lawrence,
I hear what you say about qualified podiatrists. Unfortunately, there are sharks in your profession. I had a full treadmill running gait analysis, tailor-made orthotics, the whole shebang, with a guy near Harley Street.
The problem I went to see him about remained unsolved. In the meantime, he found a whole range of other problems that led to X-rays, special manipulations, you name it. I eventually quit and went elsewhere, but not before I'd left hundreds of pounds with him over a period of a few months.
He had more letters than the alphabet after his name, and a consulting room in which you could barely see the walls for certificates. I found him through an ad in RW.
I really can't see how I was to know he was a charlatan. He had all the patter and embodied the old saying that if you can't dazzle 'em with diamonds then baffle 'em with bullsh*t. The last I heard was that he'd been struck off.
It's stuff like this that drives people towards the kind of solution that Samuel has highlighted.